电力传输线异常放电紫外光检测定位仿真与模拟验证  

Simulation and verification of ultraviolet detection and location of abnormal discharge in power transmission line

作　　者：宋鹏[1] 白晓晨 林晓焕[1] 郭华 张利剑 SONG Peng;BAI Xiaochen;LIN Xiaohuan;GUO Hua;ZHANG Lijian(School of Electronic and Information,Xi’an Polytechnic University,Xi′an 710048,China)

机构地区：[1]西安工程大学电子信息学院,陕西西安710048

出　　处：《光学精密工程》2022年第10期1160-1169,共10页Optics and Precision Engineering

基　　金：国家自然科学基金项目(No.61971345);西安市科技局科技创新引导工程项目(No.GXYD7.15);陕西省教育厅专项科研计划项目(No.19JK0361)。

摘　　要：输电线路异常放电检测对电网安全运行有重要意义。为了实现对输电线、绝缘子等电力设备异常放电的探测与定位,首先,基于遍历微元法建立了电晕放电紫外探测模型,研究了紫外光在大气信道的传输特性,给出不同电晕放电朝向条件下路径损耗与检测设备位置之间的关系。其次,考虑检测装置与放电点之间的相对位置关系,基于检测装置运动速度和接收紫外光功率极大值时的转向角度给出电晕放电点定位方法;基于检测距离和接收紫外光功率给出反演模拟放电功率的方法,进而判定模拟放电是否异常。最后,搭建实验平台,在户外对算法进行了实验验证。实验结果表明,在巡检距离分别为15 m、20 m、25 m和30 m时,该算法对放电点的定位误差小于8%,反演的模拟放电功率误差小于10%,证明了该算法的有效性。Detecting abnormal discharge from transmission lines is crucial to the safe operation of power grids.To detect and locate the abnormal discharge of power equipment such as transmission lines and insu⁃lators,first,a corona discharge ultraviolet detection model is established based on the traversing tiny unit method;the ultraviolet transmission characteristics in the atmospheric channel are studied;and the rela⁃tionship between the path loss and position of the detection equipment under different corona discharge di⁃rections is obtained.Second,by considering the relative position relationship between the detection device and discharge point,the corona discharge point location method is obtained based on the moving speed of the detection device and steering angle when receiving the maximum ultraviolet power.In addition,ac⁃cording to the detection distance and received ultraviolet power,a method for retrieving the simulated dis⁃charge power is obtained to determine whether there is an abnormal discharge.At last,an experimental platform is built to verify the algorithm outdoors.The experimental results demonstrate that,when the inspection distances are 15,20,25,and 30 m,respectively,the positioning error of the algorithm for the discharge point is<8%,and the error of retrieving the simulated discharge power is<10%,which proves the effectiveness of the algorithm.

关 键 词：异常放电 紫外探测 遍历微元法 定位 

分 类 号：TN23[电子电信—物理电子学]